Question about hard boiled eggs

Hey all, I had some older brown eggs ( prob a month old ) and I thought I'd hard boil them. I boiled them about a week ago, for a LONG time. ( I like to make sure they are done ~ 40 minutes I boiled them ) I opened 2 up just now and the white part looks fine, but it's almost like the yolk has a greenish ring around it. Is that just bc of how long I cooked em up for or is it some sort of fungas, or what? Id like to eat them, but I also don't want to get sick from eating them. Remember, they were about a month old when I boiled them.

40 minutes is a long time to boil eggs. When I overcook hardboiled eggs, they do get a greenish tinge around the outside of the yolk. Bad eggs smell very bad and will taste off. Fresh eggs in the refrigerator can keep for up to 5 weeks, so I think yours are probably okay if they taste fine and don't have a rotten egg smell.

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Hummm.....I'd give them to the dog. Yolks do tend to get a greenish colored coating, that won't kill ya, but it's the week they have been boiled that scares me. Eggs don't last that long after they are cooked.

I definitely wouldn't eat them myself - only because they'd been in the fridge for that long after being boiled. I have to echo everyone else, the green comes from not putting them in ice cold water after boiling them. Get some new eggs!

Holy SCHAMOLEY. 40 mins? I'm surprised that the whites weren't like rubber tires. Yeah, 40 mins is waaaaaayyyyy too long to boil eggs. A hard boiled egg shouldn't actually be *boiled*. Here's the best way to make them:

Put the eggs in cold water over high heat. Bring the water *just* to a boil. Turn off the heat, cover, and let cook in the hot water for 17 minutes (20 mins if you're using jumbo eggs). AT the end of the cooking time, remove them from the water and immediately cover them in ice water. While they're iced down, crack the shells all over ... the water will get between the membrane and the egg and make them easier to peel.

I don't think a week is all that long. I routinely boil a dozen eggs on Sunday night and eat them throughout the week. By the next Sunday, I"m ready to boil another dozen.

The green tinge to the yolks is caused by a reaction between the iron in the yolks and the sulfur in the whites when the egg is overcooked. It's not bad for you .. it just looks funny.

A week probably isn't long for a boiled egg, but it's a Month old. I probably just throw it away just because i'm not sure if it's worth to try...you know... a month =.='
btw, 40 minutes is TOO long. I boil my eggs for 10 minutes if i want them hard (thou usually i don't because i don't like that taste very much). I usually just boil egg for 5-7 minutes ^-^

I don't know if it's because of where I live (over 7,000 feet), but if I boil eggs for only 5-7 minutes the yolks are still runny. Mine have to be boiled for 13-16 minutes to be hard boiled. That said, 40 minutes is a REALLY long time. Everyone else has adequately explained the green ring, it just happens when they get overcooked.

I'm curious, did you eat them?

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i keep eggs for a week hard boiled. NOT a problem for me... but this is how I boil them:

put the raw eggs in a pot of cold water. put the pot on the stove to boil. watch it carefully when it comes to a hard boil I boil them for NINE (9) minutes. then I replace the boiling water in the pot with ICE and cold tap water.... perfect eggs.. no green ring, no rubber..

oh and older eggs (a week or so) peel better than brand new eggs...

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Nessa
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Borntofly- I have always been told to let your water boil and put your eggs in for just 3 minutes. You don't need them in there any longer if your water is boiling. The green means that you overcooked them. It won't hurt you to eat them but thats why they are green. My step dad is like an amzing cook he said 3 minutes is all it takes to get a perfect boiled egg